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PLATE XXXIII. LETTER XXX. 
I • 
POLYGAMIA MONOECIA. 
Acer Campestre. Common Maple, 
a a The lobed leaves. 
b b Bunches of flowers. — c Perfect. — 
d Male, with stamens only, 
e A single perfect flower. 
f A petal. 
g A perfect flower divested of the corolla 
and calyx. 
h A single stamen. 
i The pistil, with the two revolute stigmas, 
and the rudiment of the two capsules, 
terminating in a wing. 
k A male, or staminiferous flower, and a 
single petal of it. 
